440404222121 has 16 divisors (see below), whose sum is σ = 470714872320. Its totient is φ = 410594346240.

The previous prime is 440404222117. The next prime is 440404222127. The reversal of 440404222121 is 121222404044.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 440404222121 - 2² = 440404222117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440404222127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062920 + ... + 1417958.

It is an arithmetic number, because the mean of its divisors is an integer number (29419679520).

Almost surely, 2^440404222121 is an apocalyptic number.

It is an amenable number.

440404222121 is a deficient number, since it is larger than the sum of its proper divisors (30310650199).

440404222121 is a wasteful number, since it uses less digits than its factorization.

440404222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355744.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 440404222121 its reverse (121222404044), we get a palindrome (561626626165).

The spelling of 440404222121 in words is "four hundred forty billion, four hundred four million, two hundred twenty-two thousand, one hundred twenty-one".